CAMBRIDGE, Mass.--(BUSINESS WIRE)--Genzyme Corporation (NASDAQ: GENZ) today provided an update on the impact of Cerezyme® (imiglucerase for injection) supply constraints on patient treatment regimens and on the company’s 2009 financial results. The company’s Fabrazyme® (agalsidase beta) supply constraint period, Fabrazyme dose conservation guidelines for patients, and Fabrazyme financial guidance are unchanged.